What does paranoid mean?
Paranoia is an adjective describing a state of intense, persistent, and often disproportionate distrust of other people or of the intentions behind events. A paranoid person may believe that danger or betrayal is imminent, scrutinize ordinary actions for hidden threats, and react defensively to ambiguous information. The word can also be used more broadly for exaggerated watchfulness, as in “paranoid about missing a deadline,” though that usage is usually informal. In psychological and medical discussion, paranoid thinking is a recognized pattern that can occur in several conditions; the term should be used carefully and not applied as a casual label. Paranoia derives from Greek roots associated with mental disturbance and entered English through the development of the medical concept of paranoia, before becoming a general word for extreme suspicion.
adjectiveHaving or characterized by an excessive and often unfounded distrust of people or situations, or by persistent fear that harm is being planned against one. It may also describe behavior marked by extreme suspicion or defensiveness.
- Characterized by excessive or irrational distrust and fear of harm, betrayal, or persecution.
- Extremely watchful, defensive, or apprehensive about a particular situation or person.
"She became paranoid after receiving several anonymous messages and began checking the locks before leaving the house."
"The security team became paranoid after noticing a minor inconsistency in the visitor log."
"His paranoid response to the rumor made everyone uncertain whether the story was true."
The word comes from the Greek paradoxos, meaning “beside oneself” or “mad,” via the history of the modern concept of paranoia.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does paranoid come from?
The word comes through the English noun paranoia, which was borrowed from Greek paranoia, a term associated with madness or mental disturbance and formed from elements meaning “beside oneself” or “mad.” The adjective paranoid developed from the same medical tradition. Its modern psychological meaning became established during the nineteenth century, when paranoia was used to describe a particular form of delusional belief, while the common general sense of extreme suspicion developed later.
Related word forms
How paranoid is actually used
The word can be used in everyday speech for unusually suspicious or defensive behaviour, but it may sound informal or potentially stigmatizing when describing a person. In clinical contexts, “paranoid” can refer to a symptom or pattern associated with paranoid thinking, but it should not be used as a casual diagnosis.
Easily confused with paranoid
Paranoia is a noun for an intense or persistent pattern of distrust and fear, whereas paranoid is the adjective describing a person, thought, or behaviour marked by that state.
Suspicious describes doubt or caution that may be well founded, while paranoid implies excessive, exaggerated, or often unfounded distrust.